package vn.bk.hotel.dialog;

import java.util.ArrayList;
import java.util.List;

import vn.bk.hotel.R;

import android.content.Context;
import android.graphics.Rect;
import android.graphics.drawable.Drawable;
import android.view.Gravity;
import android.view.LayoutInflater;
import android.view.View;
import android.view.View.OnClickListener;
import android.view.ViewGroup;
import android.view.ViewGroup.LayoutParams;
import android.widget.ImageView;
import android.widget.LinearLayout;
import android.widget.PopupWindow.OnDismissListener;
import android.widget.ScrollView;
import android.widget.TextView;

public class QuickActionPopup extends MyPopUpWindow implements
	OnDismissListener {
    private View mRootView;
    private ImageView mArrowUp;
    private ImageView mArrowDown;
    private LayoutInflater mInflater;
    private ViewGroup mTrack;
    private ScrollView mScroller;

    private OnActionItemClickListener mItemClickListener;
    private OnDismissListener mDismissListener;

    private List<QuickActionItem> actionItems = new ArrayList<QuickActionItem>();

    private boolean mDidAction;
    private boolean reverseOrientationItem = false;

    private int mChildPos;
    private int mInsertPos;
    private int mAnimStyle;
    private int mOrientation;
    private int rootWidth = 0;

    public static final int HORIZONTAL = 0;
    public static final int VERTICAL = 1;

    public static final int ANIM_GROW_FROM_LEFT = 1;

    /**
     * Constructor for default vertical layout
     * 
     * @param context
     *            Context
     */
    public QuickActionPopup(Context context) {
	this(context, VERTICAL);
    }

    /**
     * Constructor allowing orientation override
     * 
     * @param context
     *            Context
     * @param orientation
     *            Layout orientation, can be vartical or horizontal
     */
    public QuickActionPopup(Context context, int orientation) {
	super(context);

	mOrientation = orientation;

	mInflater = (LayoutInflater) context
		.getSystemService(Context.LAYOUT_INFLATER_SERVICE);

	if (mOrientation == HORIZONTAL) {
	    setRootViewId(R.layout.popup_horizontal);
	} else {
	    setRootViewId(R.layout.popup_vertical);
	}

	mAnimStyle = ANIM_GROW_FROM_LEFT;
	mChildPos = 0;
    }

    /**
     * Set the background of the popup and the two arrows. Must be 9-patch.
     * 
     * @param popup
     * @param arrowUp
     * @param arrowDown
     */
    public void setBackgroundResources(int popup, int arrowUp, int arrowDown) {

	if (popup != 0 && arrowUp != 0 && arrowDown != 0) {

	    mScroller.setBackgroundResource(popup);
	    mArrowDown.setImageResource(arrowDown);
	    mArrowUp.setImageResource(arrowUp);

	}
    }

    /**
     * Get action item at an index
     * 
     * @param index
     *            Index of item (position from callback)
     * 
     * @return Action Item at the position
     */
    public QuickActionItem getActionItem(int index) {
	return actionItems.get(index);
    }

    /**
     * Set root view.
     * 
     * @param id
     *            Layout resource id
     */
    private void setRootViewId(int id) {
	mRootView = (ViewGroup) mInflater.inflate(id, null);
	mTrack = (ViewGroup) mRootView.findViewById(R.id.tracks);

	mArrowDown = (ImageView) mRootView.findViewById(R.id.arrow_down);
	mArrowUp = (ImageView) mRootView.findViewById(R.id.arrow_up);
	mScroller = (ScrollView) mRootView.findViewById(R.id.scroller);

	mRootView.setLayoutParams(new LinearLayout.LayoutParams(
		LayoutParams.WRAP_CONTENT, LayoutParams.WRAP_CONTENT));

	setContentView(mRootView);
    }

    /**
     * Set animation style
     * 
     * @param mAnimStyle
     *            animation style, default is set to ANIM_AUTO
     */
    public void setAnimStyle(int mAnimStyle) {
	this.mAnimStyle = mAnimStyle;
    }

    /**
     * Set listener for action item clicked.
     * 
     * @param listener
     *            Listener
     */
    public void setOnActionItemClickListener(OnActionItemClickListener listener) {
	mItemClickListener = listener;
    }

    /**
     * Add action item
     * 
     * @param action
     *            {@link QuickActionItem}
     */
    public void addActionItem(QuickActionItem action) {
	actionItems.add(action);

	String title = action.getTitle();
	Drawable icon = action.getIcon();

	View container;

	if (mOrientation == HORIZONTAL && !reverseOrientationItem) {
	    container = mInflater
		    .inflate(R.layout.action_item_horizontal, null);
	} else {
	    container = mInflater.inflate(R.layout.action_item_vertical, null);
	}

	ImageView img = (ImageView) container.findViewById(R.id.iv_icon);
	TextView text = (TextView) container.findViewById(R.id.tv_title);

	if (icon != null) {
	    img.setImageDrawable(icon);
	} else {
	    img.setVisibility(View.GONE);
	}

	if (title != null) {
	    text.setText(title);
	} else {
	    text.setVisibility(View.GONE);
	}

	final int pos = mChildPos;
	final int actionId = action.getActionId();

	container.setOnClickListener(new OnClickListener() {
	    @Override
	    public void onClick(View v) {
		if (mItemClickListener != null) {
		    mItemClickListener.onItemClick(QuickActionPopup.this, pos,
			    actionId);
		}

		if (!getActionItem(pos).isSticky()) {
		    mDidAction = true;

		    dismiss();
		}
	    }
	});

	container.setFocusable(true);
	container.setClickable(true);

	mTrack.addView(container, mInsertPos);

	mChildPos++;
	mInsertPos++;
    }

    /**
     * Show quickaction popup. Popup is automatically positioned, on top or
     * bottom of anchor
     * 
     */
    public void show(View anchor) {
	preShow();

	int xPos, yPos, arrowPos;

	mDidAction = false;

	int[] location = new int[2];

	anchor.getLocationOnScreen(location);

	Rect anchorRect = new Rect(location[0], location[1], location[0]
		+ anchor.getWidth(), location[1] + anchor.getHeight());

	mRootView.measure(LayoutParams.WRAP_CONTENT, LayoutParams.WRAP_CONTENT);

	int rootHeight = mRootView.getMeasuredHeight();

	if (rootWidth == 0) {

	    rootWidth = mRootView.getMeasuredWidth();
	}

	@SuppressWarnings("deprecation")
	int screenWidth = mWindowManager.getDefaultDisplay().getWidth();
	@SuppressWarnings("deprecation")
	int screenHeight = mWindowManager.getDefaultDisplay().getHeight();

	if ((anchorRect.left + rootWidth) > screenWidth) {

	    xPos = anchorRect.left - (rootWidth - anchor.getWidth());
	    xPos = (xPos < 0) ? 0 : xPos;

	    arrowPos = anchorRect.centerX() - xPos;

	} else {
	    if (anchor.getWidth() > rootWidth) {
		xPos = anchorRect.centerX() - (rootWidth / 2);

	    } else {
		xPos = anchorRect.left;
	    }

	    arrowPos = anchorRect.centerX() - xPos;
	}

	int dyTop = anchorRect.top;
	int dyBottom = screenHeight - anchorRect.bottom;

	boolean onTop = (dyTop > dyBottom) ? true : false;

	if (onTop) {
	    if (rootHeight > dyTop) {
		yPos = 15;
		LayoutParams l = mScroller.getLayoutParams();
		l.height = dyTop - anchor.getHeight();
	    } else {
		yPos = anchorRect.top - rootHeight;
	    }
	} else {
	    yPos = anchorRect.bottom;

	    if (rootHeight > dyBottom) {
		LayoutParams l = mScroller.getLayoutParams();
		l.height = dyBottom;
	    }
	}

	showArrow(((onTop) ? R.id.arrow_down : R.id.arrow_up), arrowPos);

	setAnimationStyle(screenWidth, anchorRect.centerX(), onTop);

	mWindow.showAtLocation(anchor, Gravity.NO_GRAVITY, xPos, yPos);
    }

    /**
     * Set animation style
     * 
     * @param screenWidth
     *            screen width
     * @param requestedX
     *            distance from left edge
     * @param onTop
     *            flag to indicate where the popup should be displayed. Set TRUE
     *            if *displayed on top of anchor view and vice versa
     */

    private void setAnimationStyle(int screenWidth, int requestedX,
	    boolean onTop) {
//	int arrowPos = requestedX - mArrowUp.getMeasuredWidth() / 2;

	switch (mAnimStyle) {
	case ANIM_GROW_FROM_LEFT:
	    mWindow.setAnimationStyle((onTop) ? R.style.Animations_PopUpMenu_Left
		    : R.style.Animations_PopDownMenu_Left);
	    break;

	}
    }

    private void showArrow(int whichArrow, int requestedX) {

	final View showArrow = (whichArrow == R.id.arrow_up) ? mArrowUp
		: mArrowDown;
	final View hideArrow = (whichArrow == R.id.arrow_up) ? mArrowDown
		: mArrowUp;

	final int arrowWidth = mArrowUp.getMeasuredWidth();

	showArrow.setVisibility(View.VISIBLE);

	ViewGroup.MarginLayoutParams param = (ViewGroup.MarginLayoutParams) showArrow
		.getLayoutParams();

	param.leftMargin = requestedX - arrowWidth / 2;

	hideArrow.setVisibility(View.INVISIBLE);
    }

    /**
     * Listener for dismissing the window.
     */

    public void setOnDismissListener(QuickActionPopup.OnDismissListener listener) {
	setOnDismissListener(this);

	mDismissListener = listener;
    }

    @Override
    public void onDismiss() {
	if (!mDidAction && mDismissListener != null) {
	    mDismissListener.onDismiss();
	}
    }

    /**
     * If we want to reverse the item orientation.
     */

    public boolean isReverseOrientationItem() {
	return reverseOrientationItem;
    }

    public void setReverseOrientationItem(boolean reverseOrientationItem) {
	this.reverseOrientationItem = reverseOrientationItem;
    }

    /**
     * Listener for item click
     * 
     */
    public interface OnActionItemClickListener {

	public abstract void onItemClick(QuickActionPopup source, int pos,
		int actionId);
    }

    /**
     * Listener for window dismiss
     * 
     */
    public interface OnDismissListener {
	public abstract void onDismiss();
    }
}